//Open Virtual Tour Window
    function OpenVirtualTour(url)
    {
        var screenWidth = screen.width;
        var screenHeight = screen.height;
        
        var popupWindowWidth = 400;
        var popupWindowHeight = 410;
        
        var topOffset = (screenHeight/2)-(popupWindowHeight/2);
        var leftOffset = (screenWidth/2)-(popupWindowWidth/2);
    
        var virtualTourWindow = window.open(url,"HFSVirtualTour","height="+popupWindowHeight+",width="+popupWindowWidth+",top="+topOffset+",left="+leftOffset+",toolbar=no,statusbar=no","");
        virtualTourWindow.focus();
        
    }